Cruelty in Surah 70

Doom is about to fall on all disbelievers. Only worshippers (Muslims) and those who preserve their
chastity (except with their wives and slave girls) will be spared from "the fires of hell" that are "eagar to roast."
70:1-30

"Lo! the doom of their Lord is that before which none can feel secure" (except for maybe those who are
fearful of it). 70:27-28

Disbelievers will enter hell with frantic with fear, knowing they will be tortured forever by Allah.
70:36, 44